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Features

The Wharfdale Two-Feeder Printing Press

Scientific Education for Women

Ancient and Modern Coinage

Habits of the Striped Squibbel--A White Wood-Chuck

Improved Match Safe

The Bee-Eating Sand-Wasp

The Mammoth Cave and the Cave Regions of Kentucky

By TILGHMAN B. VESTAL

Patent Office Affairs- June 25, 1870

The Close of Volume XXII

The Dawn of an Important Industry

Six Mouths of Progress in Mechanical and Civil Engineering

Danger of Explosion and Collapse in Kitchen Boilers-How to Avoid it

Extension of a Sewing Machine Patent

Civilization Versus Nature

Instruments for Sounding Alarms

St. Anthony's Nose and the Manufacture of Sulphuric Acid

Recent American and Foreign Patents- June 25, 1870

Official List of Patents- June 25, 1870

Answers to Correspondents- June 25, 1870

Departments

  • Departments

    Business and Personal- June 25, 1870

  • Index- June 25, 1870

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June 25, 1870

Help Us Reforest the Mississippi River Valley